Start-up manual COMPAX-M / S447.7.4 Safety chain / emergency stop functionsEstablishing a safety chain for monitoring the drives and other control componentsor a superordinate control unit usually requires a connection protected from wirebreaks. The contact outputs (closer) P (X8(9)/3) and S (X8(9)/4) are used for thispurpose. This closer establishes sequential switching for the mains module and theaxis controller. When the unit is operating correctly, the contacts are closed (P andS are connected) and thereby indicate the readiness of the unit. If an error occursor if the drive system is switched off, the readiness is not displayed and the chain isinterrupted (see below).The emergency stop input is used to activate or deactivate all drive controllers oran individual controller supplied by the mains module. In accordance with thesafety chain described above, this input must be activated to power the motors.This occurs either via an external contact between X8(9)/5 and X8(9)/6 (as isshown in the figure below) or by applying voltage of between 15V and 24V to theinput X8(9)/6 against GND (X8(9)/2). If the contact is opened or the voltage isremoved from X8(9)/6 or routed to GND24V, the emergency stop sequence isprocessed, e.g. all motors of the connected drive controller are decelerated andswitched off (no torque on the motor shaft); the ready contact drops.! After an emergency stop: error E55 (even in OFF status) and O1="0". The currentcommand is interrupted.! The controller brakes the motor (P10 = braking time from 100% speed to 0%).! When at a standstill, the controller is switched off and any idle holding brake isclosed.! Once the problem has been rectified, E55 must be acknowledged.! The current command is continued after START.NMD: X8COMPAX-S: X9:Pin Assignment1 +24V DC (<50mA)2 0V3 P: Ready contact4 S: Ready contact5 +24V DC ñ Output for emergency stop6 Emergency stop input (activated by 15V ñ 24V)Connectors: PhoenixMC1.5/7-ST-3.814 5 6 71 2 37 ScreenCOMPAX 35XXM: X19Pin Assignment1 +24V DC (<50mA)2 0V3 P: Ready contact4 S: Ready contact5 +24V DC ñ Output for emergency stop6 Emergency stop input (activated by 15V ñ 24V)7 +24V DC (<50mA)8 reserved9 +24V DC (<50mA)10 EnableConnectors: PhoenixMC1.5/7-ST-3.814 5 6 71 2 3 8 9 10 1111 ScreenReadiness,safety chainEmergency stopEmergency stopcharacteristics :Emergency stopand ready onconnector: